Sort of hard to explain but I'll do my best. There are 13 people in the one I am in and we all start with a small journal, do a layout, then send it to the next person on the list, they do one and send it on. You do one layout in each of the 13 (inc your own) and they each do one in yours. You get your complete journal at the end with 13 different peoples layout in them. I think its great!

I think they are everywhere but I joined one online. Let me know if you need more info of where.